Texas Instruments LP2985A Schematic [ru]

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

−50 −25 0 25 50 75 100 125 150

VO= 3.3 V
C

byp

= 10 nF

Dropout − (V)

150 mA

50 mA

10 mA

1 mA

Temperature − ( C)°

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LP2985 150-mA Low-noise Low-dropout Regulator With Shutdown

1 Features 3 Description

1

• Output Tolerance of
– 1% (A Grade)
– 1.5% (Standard Grade)

• Ultra-Low Dropout, Typically
– 280 mV at Full Load of 150 mA
– 7 mV at 1 mA

• Wide VINRange: 16 V Max

• Low IQ: 850 μA at Full Load at 150 mA

• Shutdown Current: 0.01 μA Typ

• Low Noise: 30 μV

With 10-nF Bypass

RMS

Capacitor

• Stable With Low-ESR Capacitors, Including
Ceramic

• Overcurrent and Thermal Protection

• High Peak-Current Capability

• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)

The LP2985 family of fixed-output, low-dropout
regulators offers exceptional, cost-effective
performance for both portable and nonportable
applications. Available in voltages of 1.8 V, 2.5 V, 2.8
V, 2.9 V, 3 V, 3.1 V, 3.3 V, 5 V, and 10 V, the family
has an output tolerance of 1% for the A version (1.5%
for the non-A version) and is capable of delivering
150-mA continuous load current. Standard regulator
features, such as overcurrent and overtemperature
protection, are included.

PART NUMBER PACKAGE BODY SIZE (NOM)

LP2985 SOT-23 (5) 2.90 mm x 1.60 mm
(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Dropout Voltage vs Temperature

LP2985

SLVS522O –JULY 2004–REVISED JANUARY 2015

Device Information

(1)

2 Applications

• Portable Devices

• Digital Cameras and Camcorders

• CD Players

• MP3 Players

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

LP2985

SLVS522O –JULY 2004–REVISED JANUARY 2015

www.ti.com

Table of Contents

1 Features.................................................................. 1

2 Applications ........................................................... 1

3 Description............................................................. 1

4 Revision History..................................................... 2

5 Pin Configuration and Functions......................... 3

6 Specifications......................................................... 4

6.1 Absolute Maximum Ratings ..................................... 4

6.2 ESD Ratings.............................................................. 4

6.3 Recommended Operating Conditions...................... 4

6.4 Thermal Information.................................................. 4

6.5 Electrical Characteristics.......................................... 5

6.6 Typical Characteristics.............................................. 7

7 Detailed Description............................................ 11

7.1 Overview................................................................. 11

7.2 Functional Block Diagram ....................................... 11

7.3 Feature Description................................................. 11

7.4 Device Functional Modes........................................ 11

8 Application and Implementation ........................ 12

8.1 Application Information............................................ 12

9 Power Supply Recommendations...................... 16

10 Layout................................................................... 17

10.1 Layout Guidelines................................................. 17

10.2 Layout Example.................................................... 17

11 Device and Documentation Support................. 17

11.1 Trademarks........................................................... 17

11.2 Electrostatic Discharge Caution............................ 17

11.3 Glossary................................................................ 17

12 Mechanical, Packaging, and Orderable

Information........................................................... 17

4 Revision History

Changes from Revision N (June 2011) to Revision O Page

• Added Applications, Device Information table, Pin Functions table, ESD Ratings table, Thermal Information table,
Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply
Recommendations section, Layout section, Device and Documentation Support section, and Mechanical,

Packaging, and Orderable Information section. ..................................................................................................................... 1

• Deleted Ordering Information table. ....................................................................................................................................... 1

2 Submit Documentation Feedback Copyright © 2004–2015, Texas Instruments Incorporated

DBV (SOT-23) PACKAGE

(TOP VIEW)

1

2

3

5

4

V

IN

GND

ON/OFF

V

OUT

BYPASS

LP2985

www.ti.com

SLVS522O –JULY 2004–REVISED JANUARY 2015

5 Pin Configuration and Functions

Pin Functions

PIN

NAME NO.

BYPASS 4 I/O Attach a 10-nF capacitor to improve low-noise performance.
GND 2 — Ground
ON/OFF 3 I Active-low shutdown pin. Tie to VINif unused.
V

IN

V

OUT

1 I Supply input
5 O Voltage output

TYPE DESCRIPTION

Copyright © 2004–2015, Texas Instruments Incorporated Submit Documentation Feedback 3

LP2985

SLVS522O –JULY 2004–REVISED JANUARY 2015

www.ti.com

6 Specifications

6.1 Absolute Maximum Ratings

over virtual junction temperature range (unless otherwise noted)

V

IN

V

ON/ OFF

I

O

θ

JA

T

J

T

stg

Continuous input voltage range
ON/OFF input voltage range –0.3 16 V
Output voltage range

Output current

(3)

(4)

Package thermal impedance
Operating virtual junction temperature 150 °C
Storage temperature range –65 150 °C

(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating

Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2) The PNP pass transistor has a parasitic diode connected between the input and output. This diode normally is reverse biased

(VIN> V
more details).

), but will be forward biased if the output voltage exceeds the input voltage by a diode drop (see Application Information for

OUT

(3) If load is returned to a negative power supply in a dual-supply system, the output must be diode clamped to GND.
(4) Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient

temperature is PD= (TJ(max) – TA)/θJA. Operating at the absolute maximum TJof 150°C can affect reliability.

(5) The package thermal impedance is calculated in accordance with JESD 51-7.

(2)

(4) (5)

(1)

MIN MAX UNIT

–0.3 16 V

–0.3 9 V

Internally limited

(short-circuit protected)

—

206 °C/W

6.2 ESD Ratings

VALUE UNIT

(1)

2000
1000

V

(ESD)

Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins

Electrostatic discharge V

Charged device model (CDM), per JEDEC specification JESD22-C101,

(2)

all pins

(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.3 Recommended Operating Conditions

MIN MAX UNIT

V

IN

V

ON/ OFF

I

OUT

T

J

Supply input voltage 2.2
ON/OFF input voltage 0 V
Output current 150 mA
Virtual junction temperature –40 125 °C

(1) Recommended minimum VINis the greater of 2.5 V or V

+ rated dropout voltage (max) for operating IL.

OUT(max)

(1)

16 V

IN

6.4 Thermal Information

LP2985

THERMAL METRIC

R

θJA

Junction-to-ambient thermal resistance 206 °C/W

(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

(1)

DBV UNIT

5 PINS

V

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LP2985

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6.5 Electrical Characteristics

at specified virtual junction temperature range, VIN= V
(unless otherwise noted)

PARAMETER TEST CONDITIONS T

IL= 1 mA 25°C –1 1 –1.5 1.5

ΔV

OUT

VIN– V

I

GND

V

ON/ OFF

I

ON/ OFF

Output voltage
tolerance

Line regulation VIN= [V

Dropout voltage

OUT

(1)

GND pin current μA

ON/OFF input voltage

ON/OFF input current μA

1 mA ≤ IL≤ 50 mA

1 mA ≤ IL≤ 150 mA

+ 1 V] to 16 V %/V

OUT(NOM)

IL= 0

IL= 1 mA

IL= 10 mA mV

IL= 50 mA

IL= 150 mA

IL= 0

IL= 1 mA 25°C (LP2985-10) 140 140

IL= 10 mA 25°C (LP2985-10) 250 250

IL= 50 mA 25°C (LP2985-10) 650 650

IL= 150 mA 25°C (LP2985-10) 1800 1800

V

< 0.3 V (OFF) 25°C 0.01 0.8 0.01 0.8

ON/ OFF

V

< 0.15 V (OFF)

ON/ OFF

V

= HIGH → O/P ON

ON/ OFF

(2)

V

= LOW → O/P OFF

ON/ OFF

V

= 0

ON/ OFF

V

= 5 V

ON/ OFF

SLVS522O –JULY 2004–REVISED JANUARY 2015

OUT(NOM)

+ 1 V, V

J

= 2 V, CIN= 1 μF, IL= 1 mA, C

ON/ OFF

LP2985A-xx LP2985-xx

MIN TYP MAX MIN TYP MAX

25°C –1.5 1.5 –2.5 2.5

–40°C to 125°C –2.5 2.5 –3.5 3.5 %V

25°C –2.5 2.5 –3 3

–40°C to 125°C –3.5 3.5 –4 4

25°C 0.007 0.014 0.007 0.014

–40°C to 125°C 0.032 0.032

25°C 1 3 1 3

–40°C to 125°C 5 5

25°C 7 10 7 10

–40°C to 125°C 15 15

25°C 40 60 40 60

–40°C to 125°C 90 90

25°C 120 150 120 150

–40°C to 125°C 225 225

25°C 280 350 280 350

–40°C to 125°C 575 575

25°C 65 95 65 95

25°C (LP2985-10) 125 125

–40°C to 125°C 125 125
–40°C to 125°C

(LP2985-10)

160 160

25°C 75 110 75 110

–40°C to 125°C 170 170

25°C 120 220 120 220

–40°C to 125°C 400 400

25°C 350 600 350 600

–40°C to 125°C 1000 1000

25°C 850 1500 850 1500

–40°C to 125°C 2500 2500

–40°C to 105°C 0.05 2 0.05 2
–40°C to 125°C 5 5

25°C 1.4 1.4

–40°C to 125°C 1.6 1.6

25°C 0.55 0.55

–40°C to 125°C 0.15 0.15

25°C 0.01 0.01

–40°C to 125°C –2 –2

25°C 5 5

–40°C to 125°C 15 15

OUT

= 4.7 μF

UNIT

NOM

V

(1) Dropout voltage is defined as the input-to-output differential at which the output voltage drops 100 mV below the value measured with a

1-V differential.

(2) The ON/OFF input must be driven properly for reliable operation (see Application Information).

Copyright © 2004–2015, Texas Instruments Incorporated Submit Documentation Feedback 5

LP2985

SLVS522O –JULY 2004–REVISED JANUARY 2015

Electrical Characteristics (continued)

at specified virtual junction temperature range, VIN= V
(unless otherwise noted)

PARAMETER TEST CONDITIONS T

V

n

ΔV

OUT

ΔV

IN

I

OUT(PK)

I

OUT(SC)

Output noise (RMS) C

/ f = 1kHz, C

Ripple rejection 25°C 45 45 dB
Peak output current V

Short-circuit current RL= 0 (steady state)

(3) See Figure 6 in Typical Performance Characteristics.

BW = 300 Hz to 50 kHz,

= 10 μF, 25°C 30 30 μV

OUT

C

= 10 nF

BYPASS

= 10 μF,

≥ V

OUT

= 10 nF

– 5% 25°C 350 350 mA

O(NOM)

(3)

C

BYPASS
OUT

OUT(NOM)

+ 1 V, V

J

= 2 V, CIN= 1 μF, IL= 1 mA, C

ON/ OFF

LP2985A-xx LP2985-xx

MIN TYP MAX MIN TYP MAX

OUT

25°C 400 400 mA

www.ti.com

= 4.7 μF

UNIT

6 Submit Documentation Feedback Copyright © 2004–2015, Texas Instruments Incorporated

200

220

240

260

280

300

320

0 0.5 1 1.5 2 2.5 3 3.5

Output Voltage − (V)

I

SC

− (mA)

VO= 3.3 V

−100

100 300 500 700

Time − (ms)

VI= 16 V
VO= 3.3 V
Ci= 1 mF
C

byp

= 0.01 mF

Short-Circuit Current −

(A)

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5

−500

0 500 1000 1500 2000

Time − (ms)

Short-Circuit Current −

(A)

VI= 6 V
VO= 3.3 V
Ci= 1 mF
C

byp

= 0.01 mF

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

−50 −25 0 25 50 75 100 125 150

VO= 3.3 V
C

byp

= 10 nF

Dropout − (V)

150 mA

50 mA

10 mA

1 mA

Temperature − ( C)°

9.85

9.90

9.95

10.00

10.05

10.10

10.15

10.20

-50 -25 0 25 50 75 100 125 150

Temperature – °C

Outp ut Voltage – V

VI= 11 V

VO= 10 V

CI= 1 µF

CO= 4.7 µF

IO= 1 mA

3.295

3.305

3.315

3.325

3.335

3.345

−50 −25

0 25 50 75 100 125 150

Output V

oltage − (V)

VI= 4.3 V
VO= 3.3 V
Ci= 1 mF
Co= 4.7 mF
IO= 1 mA

Temperature − ( C)°

LP2985

www.ti.com

6.6 Typical Characteristics

CIN= 1 μF, C

= 4.7 μF, VIN= V

OUT

OUT(NOM)

Figure 1. Output Voltage vs Temperature

SLVS522O –JULY 2004–REVISED JANUARY 2015

+ 1 V, TA= 25°C, ON/OFF pin tied to VIN(unless otherwise specified)

Figure 2. Output Voltage vs Temperature

Figure 3. Dropout Voltage vs Temperature

Copyright © 2004–2015, Texas Instruments Incorporated Submit Documentation Feedback 7

Figure 5. Short-circuit Current vs Time

Figure 4. Short-circuit Current vs Time

Figure 6. Short-circuit Current vs Output Voltage

0.001

0.01

0.1

1

10

10 100 1k 10k 100k 1M

Frequency − (Hz)

Ci= 1 mF
Co= 10 mF
VO= 3.3 V

10 mA

100 mA

1 mA

Output Impedance −

W( )

0

10

20

30

40

50

60

70

80

90

100

10 100 1k 10k 100k 1M

Frequency − (Hz)

Ripple Rejection − (dB)

VI= 5 V
VO= 3.3 V
Co= 4.7 mF
C

byp

= 10 nF

10 mA

100 mA

1 mA

0

10

20

30

40

50

60

70

80

90

100

10 100 1k 10k 100k 1M

Frequency − (Hz)

Ripple Rejection − (dB)

50 mA

150 mA

1 mA

VI= 3.7 V
VO= 3.3 V
Co= 10 mF
C

byp

= 0 nF

0

10

20

30

40

50

60

70

80

90

100

10 100 1k 10k 100k 1M

Frequency − (Hz)

Ripple Rejection − (dB)

VI= 5 V
VO= 3.3 V
Co= 4.7 mF
C

byp

= 10 nF

50 mA

150 mA

1 mA

0

10

20

30

40

50

60

70

80

90

100

10 100 1k 10k 100k 1M

Frequency − (Hz)

Ripple Rejection − (dB)

VI= 5 V
VO= 3.3 V
Co= 10 mF
C

byp

= 0 nF

50 mA

150 mA

1 mA

0

100

200

300

400

500

600

700

800

900

1000

1100

1200

0

20 40 60 80 100 120 140

Load Current − mA

160

VO= 3.3 V
C

byp

= 10 nF

Ground Pin Current −

mA

LP2985

SLVS522O –JULY 2004–REVISED JANUARY 2015

Typical Characteristics (continued)

CIN= 1 μF, C

= 4.7 μF, VIN= V

OUT

OUT(NOM)

+ 1 V, TA= 25°C, ON/OFF pin tied to VIN(unless otherwise specified)

Figure 7. Ground Pin Current vs Load Current

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Figure 8. Ripple Rejection vs Frequency

Figure 9. Ripple Rejection vs Frequency Figure 10. Ripple Rejection vs Frequency

8 Submit Documentation Feedback Copyright © 2004–2015, Texas Instruments Incorporated

Figure 11. Ripple Rejection vs Frequency

Figure 12. Output Impedance vs Frequency

0

200

400

600

800

1000

1200

1400

−50 −25 0 25 50 75 100 125

150

Ground Current − (C)

0 mA

Temperature − (°C)

150 mA

50 mA

10 mA

1 mA

VO= 3.3 V
C

byp

= 10 nF

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

0 1 2 3 4 5 6

Input Voltage − (V)

Input Current − (mA)

RL= Open

RL= 3.3 kW

VO= 3.3 V
C

byp

= 10 nF

0.01

0.1

1

10

100 1k 10k 100k

Frequency − (Hz)

Noise Density −

( V/m

I

LOAD

= 1 mA

C

byp

= 1 nF

C

byp

= 10 nF

C

byp

= 100 pF

Hz)

0.001

0.01

0.1

1

10

10 100 1k 10k 100k

1M

Frequency − (Hz)

Ci= 1 mF
Co= 4.7 mF
VO= 3.3 V

10 mA

100 mA

1 mA

Output Impedance −

W( )

0.01

0.1

1

10

100 1k 10k 100k

Frequency − (Hz)

Noise Density −

m( V/

C

byp

= 1 nF

C

byp

= 10 nF

C

byp

= 100 pF

I

LOAD

= 150 mA

Hz)

LP2985

www.ti.com

Typical Characteristics (continued)

CIN= 1 μF, C

= 4.7 μF, VIN= V

OUT

OUT(NOM)

+ 1 V, TA= 25°C, ON/OFF pin tied to VIN(unless otherwise specified)

Figure 13. Output Impedance vs Frequency

SLVS522O –JULY 2004–REVISED JANUARY 2015

Figure 14. Output Noise Density vs Frequency

Figure 15. Output Noise Density vs Frequency

Copyright © 2004–2015, Texas Instruments Incorporated Submit Documentation Feedback 9

Figure 17. Ground-pin Current vs Temperature

Figure 16. Input Current vs Input Voltage

Figure 18. 2.2-μF Stable ESR Range

for Output Voltage ≤ 2.3 V

LP2985

SLVS522O –JULY 2004–REVISED JANUARY 2015

Typical Characteristics (continued)

CIN= 1 μF, C

= 4.7 μF, VIN= V

OUT

Figure 19. 4.7-μF Stable ESR Range

for Output Voltage ≤ 2.3 V

OUT(NOM)

+ 1 V, TA= 25°C, ON/OFF pin tied to VIN(unless otherwise specified)

www.ti.com

Figure 20. 2.2-μF/3.3-μF Stable ESR Range

for Output Voltage ≥ 2.5 V

10 Submit Documentation Feedback Copyright © 2004–2015, Texas Instruments Incorporated

V

IN

V

OUT

ON/OFF

Overcurrent/

Overtemperature

Protection

V

REF

1.23 V

−

+

BYPASS

LP2985

www.ti.com

SLVS522O –JULY 2004–REVISED JANUARY 2015

7 Detailed Description

7.1 Overview

The LP2985 family of fixed-output, low-dropout regulators offers exceptional, cost-effective performance for both
portable and nonportable applications. Available in voltages of 1.8 V, 2.5 V, 2.8 V, 2.9 V, 3 V, 3.1 V, 3.3 V, 5 V,
and 10 V, the family has an output tolerance of 1% for the A version (1.5% for the non-A version) and is capable
of delivering 150-mA continuous load current. Standard regulator features, such as overcurrent and
overtemperature protection, are included.

7.2 Functional Block Diagram

7.3 Feature Description

The LP2985 has a host of features that makes the regulator an ideal candidate for a variety of portable
applications:

• Low dropout: A PNP pass element allows a typical dropout of 280 mV at 150-mA load current and 7 mV at 1­mA load.

• Low quiescent current: The use of a vertical PNP process allows for quiescent currents that are considerably
lower than those associated with traditional lateral PNP regulators.

• Shutdown: A shutdown feature is available, allowing the regulator to consume only 0.01 μA when the
ON/OFF pin is pulled low.

• Low-ESR-capacitor friendly: The regulator is stable with low-ESR capacitors, allowing the use of small,
inexpensive, ceramic capacitors in cost-sensitive applications.

• Low noise: A BYPASS pin allows for low-noise operation, with a typical output noise of 30 μV

, with the

RMS

use of a 10-nF bypass capacitor.

• Small packaging: For the most space-constrained needs, the regulator is available in the SOT-23 package.

7.4 Device Functional Modes

7.4.1 Normal Operation

In normal operation, the device will output a fixed voltage corresponding with the orderable part number. The
device can deliver 150 mA of continuous load current.

7.4.2 Shutdown Mode

Set the ON/OFF pin low to shut down the device when VINis still present. If a shutdown mode is not needed, tie
the pin to VIN. For proper operation, do not leave ON/OFF unconnected, and apply a signal with a slew rate of
≥40 mV/μs.

Copyright © 2004–2015, Texas Instruments Incorporated Submit Documentation Feedback 11

V

OUT

2.2 µF

10 nF

1 µF

V

IN

1

ON/OFF

2GND

3

5

4

BYPASS

LP2985

LP2985

SLVS522O –JULY 2004–REVISED JANUARY 2015

8 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.

8.1 Application Information

The following application schematic shows the standard usage of the LP2985 as a low-dropout regulator.

8.1.1 Typical Application

www.ti.com

8.1.2 Design Requirements

Minimum C

value for stability (can be increased without limit for improved stability and transient response)

OUT

ON/OFF must be actively terminated. Connect to VINif shutdown feature is not used.
Optional BYPASS capacitor for low-noise operation

8.1.3 Capacitors

8.1.3.1 Input Capacitor (CIN)

A minimum value of 1 μF (over the entire operating temperature range) is required at the input of the LP2985. In
addition, this input capacitor should be located within 1 cm of the input pin and connected to a clean analog
ground. There are no equivalent series resistance (ESR) requirements for this capacitor, and the capacitance
can be increased without limit.

12 Submit Documentation Feedback Copyright © 2004–2015, Texas Instruments Incorporated

V

OUT

V

IN

Schottky

LP2985

V

OUT

V

IN

LP2985

www.ti.com

SLVS522O –JULY 2004–REVISED JANUARY 2015

Application Information (continued)

8.1.3.2 Output Capacitor (C

As an advantage over other regulators, the LP2985 permits the use of low-ESR capacitors at the output,
including ceramic capacitors that can have an ESR as low as 5 mΩ. Tantalum and film capacitors also can be
used if size and cost are not issues. The output capacitor also should be located within 1 cm of the output pin
and be returned to a clean analog ground.

As with other PNP LDOs, stability conditions require the output capacitor to have a minimum capacitance and an
ESR that falls within a certain range.

• Minimum C

: 2.2 μF (can be increased without limit to improve transient response stability margin)

OUT

• ESR range: see Figure 18 through Figure 20

It is critical that both the minimum capacitance and ESR requirement be met over the entire operating
temperature range. Depending on the type of capacitors used, both these parameters can vary significantly with
temperature (see capacitor characteristics).

8.1.3.3 Noise Bypass Capacitor (C

The LP2985 allows for low-noise performance with the use of a bypass capacitor that is connected to the internal
bandgap reference via the BYPASS pin. This high-impedance bandgap circuitry is biased in the microampere
range and, thus, cannot be loaded significantly, otherwise, its output – and, correspondingly, the output of the
regulator – changes. Thus, for best output accuracy, dc leakage current through C
much as possible and never should exceed 100 nA.

A 10-nF capacitor is recommended for C

OUT

)

BYPASS

BYPASS

)

BYPASS

should be minimized as

. Ceramic and film capacitors are well suited for this purpose.

8.1.3.4 Reverse Input-Output Voltage

There is an inherent diode present across the PNP pass element of the LP2985.

With the anode connected to the output, this diode is reverse biased during normal operation, since the input
voltage is higher than the output. However, if the output is pulled higher than the input for any reason, this diode
is forward biased and can cause a parasitic silicon-controlled rectifier (SCR) to latch, resulting in high current
flowing from the output to the input. Thus, to prevent possible damage to the regulator in any application where
the output may be pulled above the input, or the input may be shorted to ground, an external Schottky diode
should be connected between the output and input. With the anode on output, this Schottky limits the reverse
voltage across the output and input pins to ∼0.3 V, preventing the regulator’s internal diode from forward biasing.

Copyright © 2004–2015, Texas Instruments Incorporated Submit Documentation Feedback 13

Output V

oltage − (V)

Load Current − (mA)

3.22

3.24

3.26

3.28

3.3

3.32

3.34

3.36

3.38

3.4

−250

−200

−150

−100

−50

0

50

100

150

200

VO= 3.3 V
C

byp

= 10 nF

DIL= 150 mA

I

L

V

O

20 ms/div→

3.22

3.24

3.26

3.28

3.3

3.32

3.34

3.36

3.38

3.4

Output V

oltage − (V)

−250

−200

−150

−100

−50

0

50

100

150

200

Load Current − (mA)

20 ms/div→

VO= 3.3 V
C

byp

= 10 nF

DIL= 100 mA

I

L

V

O

LP2985

SLVS522O –JULY 2004–REVISED JANUARY 2015

www.ti.com

Application Information (continued)

8.1.4 Detailed Design Procedure

8.1.4.1 Capacitor Characteristics

8.1.4.1.1 Ceramics

Ceramic capacitors are ideal choices for use on the output of the LP2985 for several reasons. For capacitances
in the range of 2.2 μF to 4.7 μF, ceramic capacitors have the lowest cost and the lowest ESR, making them
choice candidates for filtering high-frequency noise. For instance, a typical 2.2-μF ceramic capacitor has an ESR
in the range of 10 mΩ to 20 mΩ and, thus, satisfies minimum ESR requirements of the regulator.

Ceramic capacitors have one major disadvantage that must be taken into account – a poor temperature
coefficient, where the capacitance can vary significantly with temperature. For instance, a large-value ceramic
capacitor (≥ 2.2 μF) can lose more than half of its capacitance as the temperature rises from 25°C to 85°C. Thus,
a 2.2-μF capacitor at 25°C drops well below the minimum C
rises. For this reason, select an output capacitor that maintains the minimum 2.2 μF required for stability over the
entire operating temperature range. Note that there are some ceramic capacitors that can maintain a ±15%
capacitance tolerance over temperature.

8.1.4.1.2 Tantalum

Tantalum capacitors can be used at the output of the LP2985, but there are significant disadvantages that could
prohibit their use:

• In the 1-μF to 4.7-μF range, tantalum capacitors are more expensive than ceramics of the equivalent
capacitance and voltage ratings.

• Tantalum capacitors have higher ESRs than their equivalent-sized ceramic counterparts. Thus, to meet the
ESR requirements, a higher-capacitance tantalum may be required, at the expense of larger size and higher
cost.

• The ESR of a tantalum capacitor increases as temperature drops, as much as double from 25°C to –40°C.
Thus, ESR margins must be maintained over the temperature range to prevent regulator instability.

required for stability, as ambient temperature

OUT

8.1.4.2 ON/OFF Operation

The LP2985 allows for a shutdown mode via the ON/OFF pin. Driving the pin LOW (≤ 0.3 V) turns the device
OFF; conversely, a HIGH (≥ 1.6 V) turns the device ON. If the shutdown feature is not used, ON/OFF should be
connected to the input to ensure that the regulator is on at all times. For proper operation, do not leave ON/OFF
unconnected, and apply a signal with a slew rate of ≥ 40 mV/μs.

8.1.5 Application Curves

14 Submit Documentation Feedback Copyright © 2004–2015, Texas Instruments Incorporated

Figure 21. Load Transient Response

Figure 22. Load Transient Response

0

2

4

6

8

10

−4

−3

−2

−1

0

1

2

3

4

Output V

oltage − (V)

V

ON/OFF

− (V)

V

O

V

ON/OFF

100 ms/div→

VO= 3.3 V
C

byp

= 0

IO= 150 mA

3.27

3.29

3.31

3.33

3.35

3.37

3.39

3.41

2

2.5

3

3.5

4

4.5

5

5.5

Output V

oltage − (V)

VO= 3.3 V
C

byp

= 10 nF

IO= 1 mA

Input V

oltage − (V)

V

IN

V

O

100 ms/div→

Output V

oltage − (V)

3.27

3.29

3.31

3.33

3.35

3.37

3.39

3.41

2

2.5

3

3.5

4

4.5

5

5.5

VO= 3.3 V
C

byp

= 10 nF

IO= 150 mA

Input V

oltage − (V)

V

I

V

O

20 ms/div→

Output V

oltage − (V)

3.27

3.29

3.31

3.33

3.35

3.37

3.39

3.41

2

2.5

3

3.5

4

4.5

5

5.5

VO= 3.3 V
C

byp

= 0 nF

IO= 1 mA

Input V

oltage − (V)

V

I

V

O

20 ms/div→

3.22

3.24

3.26

3.28

3.3

3.32

3.34

3.36

3.38

3.4

−250

−200

−150

−100

−50

0

50

100

150

200

Output V

oltage − (V)

Load Current − (mA)

I

L

V

O

VO= 3.3 V
C

byp

= 0 nF

DIL= 150 mA

20 ms/div→

3.27

3.29

3.31

3.33

3.35

3.37

3.39

3.41

2

2.5

3

3.5

4

4.5

5

5.5

V

I

V

O

Output V

oltage − (V)

Input V

oltage − (V)

20 ms/div→

VO= 3.3 V
C

byp

= 0 nF

IO= 150 mA

LP2985

www.ti.com

Application Information (continued)

Figure 23. Load Transient Response

SLVS522O –JULY 2004–REVISED JANUARY 2015

Figure 24. Line Transient Response

Figure 25. Line Transient Response Figure 26. Line Transient Response

Figure 27. Line Transient Response

Copyright © 2004–2015, Texas Instruments Incorporated Submit Documentation Feedback 15

Figure 28. Turn-on Time

Output V

oltage − (V)

−4

−3

−2

−1

0

1

2

3

4

0

2

4

6

8

10

V

ON/OFF

− (V)

Input

Output

VO= 3.3 V
C

byp

= 10 nF

I

LOAD

= 150 mA

20 ms/div→

−4

−3

−2

−1

0

1

2

3

4

0

2

4

6

8

10

Output V

oltage − (V)

V

ON/OFF

− (V)

V

O

V

ON/OFF

200 ms/div→

VO= 3.3 V
C

byp

= 100 pF

I

LOAD

= 150 mA

−4

−3

−2

−1

0

1

2

3

4

0

2

4

6

8

10

Output V

oltage − (V)

V

ON/OFF

− (V)

V

O

V

ON/OFF

2 ms/div→

VO= 3.3 V
C

byp

= 1 nF

I

LOAD

= 150 mA

LP2985

SLVS522O –JULY 2004–REVISED JANUARY 2015

Application Information (continued)

Figure 29. Turn-on Time

www.ti.com

Figure 30. Turn-on Time

Figure 31. Turn-on Time

9 Power Supply Recommendations

A power supply may be used at the input voltage within the ranges given in the Recommended Operating

Conditions table. It is recommended to use bypass capacitors as described in Layout Guidelines.

16 Submit Documentation Feedback Copyright © 2004–2015, Texas Instruments Incorporated

LP2985

1

2

3

5

4

2.2 F

10 nF

1 F

V

IN

V

OUT

ON/OFF

tied to V

IN

if not used

LP2985

www.ti.com

SLVS522O –JULY 2004–REVISED JANUARY 2015

10 Layout

10.1 Layout Guidelines

• It is recommended that the input pin be bypassed to ground with a bypass-capacitor.

• The optimum placement of the bypass capacitor is closest to the VINof the device and GND of the system.
Care must be taken to minimize the loop area formed by the bypass-capacitor connection, the VINpin, and
the GND pin of the system.

• For operation at full-rated load, it is recommended to use wide trace lengths to eliminate IR drop and heat
dissipation.

10.2 Layout Example

Figure 32. Layout Diagram

11 Device and Documentation Support

11.1 Trademarks

All trademarks are the property of their respective owners.

11.2 Electrostatic Discharge Caution

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.

11.3 Glossary

SLYZ022 — TI Glossary.

This glossary lists and explains terms, acronyms, and definitions.

12 Mechanical, Packaging, and Orderable Information

The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.

Copyright © 2004–2015, Texas Instruments Incorporated Submit Documentation Feedback 17

PACKAGE OPTION ADDENDUM

www.ti.com

PACKAGING INFORMATION

Orderable Device Status

LP2985-10DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985-10DBVT ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985-18DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985-18DBVRE4 ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985-18DBVRG4 ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985-18DBVT ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985-18DBVTE4 ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985-18DBVTG4 ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985-25DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985-25DBVRG4 ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985-25DBVT ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985-25DBVTG4 ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985-28DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985-28DBVT ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985-28DBVTE4 ACTIVE SOT-23 DBV 5 TBD Call TI Call TI -40 to 125

Package Type Package

(1)

Drawing

Pins Package

Qty

Eco Plan

(2)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

Lead/Ball Finish

(6)

MSL Peak Temp

(3)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LRCG

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LRCG

CU NIPDAU | CU SN Level-1-260C-UNLIM -40 to 125 (LPHG ~ LPHL)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LPHG

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LPHG

CU NIPDAU | CU SN Level-1-260C-UNLIM -40 to 125 (LPHG ~ LPHL)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LPHG

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LPHG

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPLG ~ LPLL)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPLG ~ LPLL)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPLG ~ LPLL)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPLG ~ LPLL)

CU NIPDAU | CU SN Level-1-260C-UNLIM -40 to 125 (LPGG ~ LPGL)

CU NIPDAU | CU SN Level-1-260C-UNLIM -40 to 125 (LPGG ~ LPGL)

18-Sep-2015

Op Temp (°C) Device Marking

(4/5)

Samples

LP2985-28DBVTG4 ACTIVE SOT-23 DBV 5 250 Green (RoHS

& no Sb/Br)

LP2985-29DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

& no Sb/Br)

Addendum-Page 1

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LPGG

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPMG ~ LPML)

PACKAGE OPTION ADDENDUM

www.ti.com

Orderable Device Status

Package Type Package

(1)

Drawing

Pins Package

Qty

LP2985-30DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985-30DBVRG4 ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985-30DBVT ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985-30DBVTG4 ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985-33DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985-33DBVRE4 ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985-33DBVRG4 ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985-33DBVT ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985-33DBVTE4 ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985-33DBVTG4 ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985-50DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985-50DBVRG4 ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985-50DBVT ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985-50DBVTG4 ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985A-10DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985A-10DBVT ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985A-18DBVJ ACTIVE SOT-23 DBV 5 10000 Green (RoHS

LP2985A-18DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

Eco Plan

(2)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

Lead/Ball Finish

(6)

MSL Peak Temp

(3)

Op Temp (°C) Device Marking

(4/5)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPNG ~ LPNL)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPNG ~ LPNL)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPNG ~ LPNL)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPNG ~ LPNL)

CU NIPDAU | CU SN Level-1-260C-UNLIM -40 to 125 (LPFG ~ LPFL)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LPFG

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LPFG

CU NIPDAU | CU SN Level-1-260C-UNLIM -40 to 125 (LPFG ~ LPFL)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LPFG

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LPFG

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPSG ~ LPSL)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPSG ~ LPSL)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPSG ~ LPSL)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPSG ~ LPSL)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LRDG

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LRDG

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LPTL

CU NIPDAU | CU SN Level-1-260C-UNLIM -40 to 125 (LPTG ~ LPTL)

18-Sep-2015

Samples

Addendum-Page 2

PACKAGE OPTION ADDENDUM

www.ti.com

Orderable Device Status

Package Type Package

(1)

Drawing

Pins Package

Qty

Eco Plan

(2)

Lead/Ball Finish

(6)

MSL Peak Temp

(3)

LP2985A-18DBVRE4 ACTIVE SOT-23 DBV 5 TBD Call TI Call TI -40 to 125
LP2985A-18DBVRG4 ACTIVE SOT-23 DBV 5 3000 Green (RoHS

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LPTG

& no Sb/Br)

LP2985A-18DBVT ACTIVE SOT-23 DBV 5 250 Green (RoHS

CU NIPDAU | CU SN Level-1-260C-UNLIM -40 to 125 (LPTG ~ LPTL)

& no Sb/Br)

LP2985A-18DBVTE4 ACTIVE SOT-23 DBV 5 TBD Call TI Call TI -40 to 125

LP2985A-25DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPUG ~ LPUL)

& no Sb/Br)

LP2985A-25DBVRG4 ACTIVE SOT-23 DBV 5 3000 Green (RoHS

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPUG ~ LPUL)

& no Sb/Br)

LP2985A-25DBVT ACTIVE SOT-23 DBV 5 250 Green (RoHS

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPUG ~ LPUL)

& no Sb/Br)

LP2985A-25DBVTG4 ACTIVE SOT-23 DBV 5 250 Green (RoHS

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPUG ~ LPUL)

& no Sb/Br)

LP2985A-28DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

CU NIPDAU | CU SN Level-1-260C-UNLIM -40 to 125 (LPJG ~ LPJL)

& no Sb/Br)

LP2985A-28DBVT ACTIVE SOT-23 DBV 5 250 Green (RoHS

CU NIPDAU | CU SN Level-1-260C-UNLIM -40 to 125 (LPJG ~ LPJL)

& no Sb/Br)

LP2985A-29DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LPZG ~ LPZL)

& no Sb/Br)

LP2985A-30DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LRAG ~ LRAL)

& no Sb/Br)

LP2985A-30DBVT ACTIVE SOT-23 DBV 5 250 Green (RoHS

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LRAG ~ LRAL)

& no Sb/Br)

LP2985A-30DBVTG4 ACTIVE SOT-23 DBV 5 250 Green (RoHS

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LRAG ~ LRAL)

& no Sb/Br)

LP2985A-33DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

CU NIPDAU | CU SN Level-1-260C-UNLIM -40 to 125 (LPKG ~ LPKL)

& no Sb/Br)

LP2985A-33DBVRE4 ACTIVE SOT-23 DBV 5 TBD Call TI Call TI -40 to 125

18-Sep-2015

Op Temp (°C) Device Marking

(4/5)

Samples

LP2985A-33DBVRG4 ACTIVE SOT-23 DBV 5 3000 Green (RoHS

& no Sb/Br)

LP2985A-33DBVT ACTIVE SOT-23 DBV 5 250 Green (RoHS

& no Sb/Br)

Addendum-Page 3

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LPKG

CU NIPDAU | CU SN Level-1-260C-UNLIM -40 to 125 (LPKG ~ LPKL)

PACKAGE OPTION ADDENDUM

www.ti.com

Orderable Device Status

LP2985A-33DBVTE4 ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985A-33DBVTG4 ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985A-50DBVR ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985A-50DBVRG4 ACTIVE SOT-23 DBV 5 3000 Green (RoHS

LP2985A-50DBVT ACTIVE SOT-23 DBV 5 250 Green (RoHS

LP2985A-50DBVTG4 ACTIVE SOT-23 DBV 5 250 Green (RoHS

(1)

The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.

Package Type Package

(1)

Drawing

Pins Package

Qty

Eco Plan

(2)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

Lead/Ball Finish

(6)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LPKG

CU NIPDAU Level-1-260C-UNLIM -40 to 125 LPKG

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LR1G ~ LR1L)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LR1G ~ LR1L)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LR1G ~ LR1L)

CU NIPDAU Level-1-260C-UNLIM -40 to 125 (LR1G ~ LR1L)

MSL Peak Temp

(3)

Op Temp (°C) Device Marking

18-Sep-2015

(4/5)

(2)

Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability

information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that

lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)

(3)

MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.

(4)

There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.

(5)

Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation

of the previous line and the two combined represent the entire Device Marking for that device.

Samples

Addendum-Page 4

PACKAGE OPTION ADDENDUM

www.ti.com

(6)

Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish

value exceeds the maximum column width.

18-Sep-2015

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

Addendum-Page 5

PACKAGE MATERIALS INFORMATION

www.ti.com 29-May-2015

TAPE AND REEL INFORMATION

*All dimensions are nominal

Device Package

LP2985-10DBVR SOT-23 DBV 5 3000 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3

LP2985-10DBVT SOT-23 DBV 5 250 178.0 9.0 3.3 3.2 1.4 4.0 8.0 Q3
LP2985-18DBVR SOT-23 DBV 5 3000 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985-18DBVR SOT-23 DBV 5 3000 178.0 9.0 3.3 3.2 1.4 4.0 8.0 Q3

LP2985-18DBVRG4 SOT-23 DBV 5 3000 178.0 9.0 3.3 3.2 1.4 4.0 8.0 Q3

LP2985-18DBVT SOT-23 DBV 5 250 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3

LP2985-18DBVTG4 SOT-23 DBV 5 250 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3

LP2985-25DBVR SOT-23 DBV 5 3000 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985-25DBVR SOT-23 DBV 5 3000 178.0 9.0 3.3 3.2 1.4 4.0 8.0 Q3

LP2985-25DBVT SOT-23 DBV 5 250 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985-28DBVR SOT-23 DBV 5 3000 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985-28DBVR SOT-23 DBV 5 3000 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3

LP2985-28DBVT SOT-23 DBV 5 250 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3

LP2985-28DBVTG4 SOT-23 DBV 5 250 178.0 9.0 3.3 3.2 1.4 4.0 8.0 Q3

LP2985-29DBVR SOT-23 DBV 5 3000 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985-29DBVR SOT-23 DBV 5 3000 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3
LP2985-30DBVR SOT-23 DBV 5 3000 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985-30DBVR SOT-23 DBV 5 3000 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3

Type

Package
Drawing

Pins SPQ Reel

Diameter

(mm)

Reel

Width

W1 (mm)

A0

(mm)B0(mm)K0(mm)P1(mm)W(mm)

Pin1

Quadrant

Pack Materials-Page 1

PACKAGE MATERIALS INFORMATION

www.ti.com 29-May-2015

Device Package

LP2985-30DBVT SOT-23 DBV 5 250 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985-33DBVR SOT-23 DBV 5 3000 178.0 9.0 3.3 3.2 1.4 4.0 8.0 Q3

LP2985-33DBVRG4 SOT-23 DBV 5 3000 178.0 9.0 3.3 3.2 1.4 4.0 8.0 Q3

LP2985-33DBVT SOT-23 DBV 5 250 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3

LP2985-33DBVTG4 SOT-23 DBV 5 250 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3

LP2985-50DBVR SOT-23 DBV 5 3000 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985-50DBVR SOT-23 DBV 5 3000 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3

LP2985-50DBVT SOT-23 DBV 5 250 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3

LP2985A-10DBVR SOT-23 DBV 5 3000 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3

LP2985A-10DBVT SOT-23 DBV 5 250 178.0 9.0 3.3 3.2 1.4 4.0 8.0 Q3

LP2985A-18DBVJ SOT-23 DBV 5 10000 330.0 8.4 3.17 3.23 1.37 4.0 8.0 Q3
LP2985A-18DBVR SOT-23 DBV 5 3000 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3
LP2985A-18DBVR SOT-23 DBV 5 3000 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3

LP2985A-18DBVRG4 SOT-23 DBV 5 3000 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3

LP2985A-18DBVT SOT-23 DBV 5 250 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985A-25DBVR SOT-23 DBV 5 3000 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985A-25DBVR SOT-23 DBV 5 3000 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3

LP2985A-25DBVT SOT-23 DBV 5 250 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985A-28DBVR SOT-23 DBV 5 3000 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985A-28DBVR SOT-23 DBV 5 3000 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3

LP2985A-28DBVT SOT-23 DBV 5 250 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985A-29DBVR SOT-23 DBV 5 3000 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985A-29DBVR SOT-23 DBV 5 3000 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3
LP2985A-30DBVR SOT-23 DBV 5 3000 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3
LP2985A-30DBVR SOT-23 DBV 5 3000 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3

LP2985A-30DBVT SOT-23 DBV 5 250 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985A-33DBVR SOT-23 DBV 5 3000 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3
LP2985A-33DBVR SOT-23 DBV 5 3000 178.0 9.0 3.3 3.2 1.4 4.0 8.0 Q3

LP2985A-33DBVRG4 SOT-23 DBV 5 3000 178.0 9.0 3.3 3.2 1.4 4.0 8.0 Q3

LP2985A-33DBVT SOT-23 DBV 5 250 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3

LP2985A-33DBVT SOT-23 DBV 5 250 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3

LP2985A-33DBVTG4 SOT-23 DBV 5 250 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3

LP2985A-50DBVR SOT-23 DBV 5 3000 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3
LP2985A-50DBVR SOT-23 DBV 5 3000 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3

LP2985A-50DBVT SOT-23 DBV 5 250 180.0 9.2 3.17 3.23 1.37 4.0 8.0 Q3

Type

Package
Drawing

Pins SPQ Reel

Diameter

(mm)

Reel

Width

W1 (mm)

A0

(mm)B0(mm)K0(mm)P1(mm)W(mm)

Pin1

Quadrant

Pack Materials-Page 2

PACKAGE MATERIALS INFORMATION

www.ti.com 29-May-2015

*All dimensions are nominal

Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)

LP2985-10DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0
LP2985-10DBVT SOT-23 DBV 5 250 180.0 180.0 18.0
LP2985-18DBVR SOT-23 DBV 5 3000 205.0 200.0 33.0
LP2985-18DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0

LP2985-18DBVRG4 SOT-23 DBV 5 3000 180.0 180.0 18.0

LP2985-18DBVT SOT-23 DBV 5 250 205.0 200.0 33.0

LP2985-18DBVTG4 SOT-23 DBV 5 250 180.0 180.0 18.0

LP2985-25DBVR SOT-23 DBV 5 3000 205.0 200.0 33.0
LP2985-25DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0
LP2985-25DBVT SOT-23 DBV 5 250 205.0 200.0 33.0
LP2985-28DBVR SOT-23 DBV 5 3000 205.0 200.0 33.0
LP2985-28DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0
LP2985-28DBVT SOT-23 DBV 5 250 205.0 200.0 33.0

LP2985-28DBVTG4 SOT-23 DBV 5 250 180.0 180.0 18.0

LP2985-29DBVR SOT-23 DBV 5 3000 205.0 200.0 33.0
LP2985-29DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0
LP2985-30DBVR SOT-23 DBV 5 3000 205.0 200.0 33.0
LP2985-30DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0
LP2985-30DBVT SOT-23 DBV 5 250 205.0 200.0 33.0
LP2985-33DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0

Pack Materials-Page 3

PACKAGE MATERIALS INFORMATION

www.ti.com 29-May-2015

Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)

LP2985-33DBVRG4 SOT-23 DBV 5 3000 180.0 180.0 18.0

LP2985-33DBVT SOT-23 DBV 5 250 180.0 180.0 18.0

LP2985-33DBVTG4 SOT-23 DBV 5 250 180.0 180.0 18.0

LP2985-50DBVR SOT-23 DBV 5 3000 205.0 200.0 33.0
LP2985-50DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0

LP2985-50DBVT SOT-23 DBV 5 250 205.0 200.0 33.0
LP2985A-10DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0
LP2985A-10DBVT SOT-23 DBV 5 250 180.0 180.0 18.0

LP2985A-18DBVJ SOT-23 DBV 5 10000 358.0 332.0 35.0
LP2985A-18DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0
LP2985A-18DBVR SOT-23 DBV 5 3000 205.0 200.0 33.0

LP2985A-18DBVRG4 SOT-23 DBV 5 3000 180.0 180.0 18.0

LP2985A-18DBVT SOT-23 DBV 5 250 205.0 200.0 33.0
LP2985A-25DBVR SOT-23 DBV 5 3000 205.0 200.0 33.0
LP2985A-25DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0
LP2985A-25DBVT SOT-23 DBV 5 250 205.0 200.0 33.0
LP2985A-28DBVR SOT-23 DBV 5 3000 205.0 200.0 33.0
LP2985A-28DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0
LP2985A-28DBVT SOT-23 DBV 5 250 205.0 200.0 33.0
LP2985A-29DBVR SOT-23 DBV 5 3000 205.0 200.0 33.0
LP2985A-29DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0
LP2985A-30DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0
LP2985A-30DBVR SOT-23 DBV 5 3000 205.0 200.0 33.0
LP2985A-30DBVT SOT-23 DBV 5 250 205.0 200.0 33.0
LP2985A-33DBVR SOT-23 DBV 5 3000 205.0 200.0 33.0
LP2985A-33DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0

LP2985A-33DBVRG4 SOT-23 DBV 5 3000 180.0 180.0 18.0

LP2985A-33DBVT SOT-23 DBV 5 250 180.0 180.0 18.0
LP2985A-33DBVT SOT-23 DBV 5 250 205.0 200.0 33.0

LP2985A-33DBVTG4 SOT-23 DBV 5 250 180.0 180.0 18.0

LP2985A-50DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0
LP2985A-50DBVR SOT-23 DBV 5 3000 205.0 200.0 33.0
LP2985A-50DBVT SOT-23 DBV 5 250 205.0 200.0 33.0

Pack Materials-Page 4

IMPORTANT NOTICE

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